MoS2 as connector inspired high electrocatalytic performance of NiCo2O4 nanoplates towards glucose
| Autor: | Shuang Wang, Liu Maoxiang, Qian Yueyue, Shupeng Zhang, Haiou Song, Juanjuan Gao |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Materials science Nanostructure Scanning electron microscope Metals and Alloys Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Ascorbic acid 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalytic oxidation X-ray photoelectron spectroscopy Transmission electron microscopy Materials Chemistry Electrical and Electronic Engineering 0210 nano-technology Instrumentation Biosensor |
| Zdroj: | Sensors and Actuators B: Chemical. 254:1101-1109 |
| ISSN: | 0925-4005 |
| Popis: | A novel MoS2-NiCo2O4 architecture with highly sensitive determination toward glucose is constructed successfully in this work. MoS2 nanosheets are regarded as clever connectors to connect NiCo2O4 nanoplates together, which would inspire the electrocatlytic performance of NiCo2O4 nanoplates acted as active sites greatly. The interesting nanostructure and composition were confirmed by scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy, etc. Rational incorporation of MoS2 as an electron collector can promote the formation of conductive chains among the NiCo2O4 nanoplates, accompanying with inhibiting of NiCo2O4 aggregation. The conductive path can accelerate the charge transfer significantly. The MoS2-NiCo2O4 modified GCE exhibits enhanced electrocatalytic activity toward the oxidation of glucose, compared with NiCo2O4 nanoplates. At a potential of +0.418 V, the fabricated biosensor demonstrates a wide detection range with high sensitivity (1748.58 μAmM−1cm−2) and a low detection limit of 0.152 μM. It also shows anti-interference for ascorbic acid, uric acid, dopamine and chloride ion. Besides, it owns good reproducibility, repeatability and long-term stability. Excellent catalytic oxidation performance for glucose supports that MoS2-NiCo2O4 hybrid is an outstanding and promising electrode material toward glucose biosensor. |
| Databáze: | OpenAIRE |
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